"The Invincible, you know," he added, "is the largest amber diamond in the world, almost the size of the famous Cullinan, over three hundred carats. It was found in the dry diggings of the Vaal River, a few miles from Kimberley. The dry diggings are independent of the De Beers combine, of course. Well, its owner has always been in the position of Mark Twain's man with the million-dollar bank-note who found it too large to cash. No one knows just what an amber diamond of that size is really worth. This one is almost perfect, resembles the huge top of a decanter stopper. It's a beautiful orange color and has been estimated at—well, as high as close to a quarter of a million, though, as I said, that is all guesswork."
"Yes?" remarked Kennedy, more for politeness than anything else.
Wade leaned over closer.
"The Invincible," he whispered, shielding his lips from the keen, biting gale, "was last known to belong to the De Guerres, of Antwerp. One of my special agents abroad has cabled me to look out for it. He thinks there is reason to believe it will be smuggled into America for safe keeping during the troubles in Belgium."
It seemed to make no difference to the customs man that Kennedy did not exactly welcome him with open arms. "The De Guerres are well-known dealers in diamonds, one of the leading houses in the 'city of diamonds,' as Antwerp has been called. One of the De Guerres is on the Sylvania, the junior partner—" he paused, then added,—"the husband, I believe, of Rawaruska. I thought perhaps you might be willing to try to help me."
"I should be glad to," replied Kennedy tersely, pondering what the officer had told us.
Nothing more was said on the trip and at last we came to the Sylvania, lying grim and dark of hull off the little cluster of Quarantine buildings, with myriads of twinkling lights on her, far above but scarcely relieving the blackness of the leviathan form.
Thompson, the purser, a quiet, unexcitable Englishman, met us as we came over the side, and for the moment we lost sight of our new-found friend, Wade.
"Perhaps you didn't know it," informed Thompson as we made our way through the ship, "but Rawaruska was married—had been for some time."
"Who was her husband?" queried Kennedy, seeking confirmation of what we had already heard.